3.5v LED light source for true tissue color and life long lamp performance Fiberoptics for cool, obstruction free light transmission Upgraded to 5X wide angle lens that pivots to one side for instrumentation or cleaning Otoscope head made from polymid-an impact resistant space age thermoplastic Welch Allyn disposable polypropylene ear specula in 2.75mm and 4.25mm sizes are convenient, safe and economical Uses standard AA batteries as well as re-chartgeables. Power consumption is 10 times less using a LED than halogen.Batteries will last and last. Pocket clip with integral on/off slide switch for ambidextrous use Complete instrument includes tube of 5 each 2.75mm and 4.25mm speculaImported